Improvement in piano-forte strings



E. J. WATSON & P. BAUER. Pianoforte-Strings.

No. 210,172. Patented-Nov.19,1878.

Int enters,

4, z wfi qllw NFETERS, FHOTO-LITHOGRAPHER, WASHLNGTDN L! C ED\VIN J. \VATSON AND PAUL BAUER, OF WORCESTER, MASSACHUSETTS.

iMPROVEMENT IN PIANO-FORTE STRINGS.

Specification forming part of Letters Patent No. 210,172, dated November 19, 1878 3 application filed November 3, 1877.

To all when: it may concern:

Be it known that we, EDWIN J. .VATSON and PAU L BAUER, of \Vorcester, in the county of \Voreester and State of Massachusctts,have invented a new and valuable Improvement in Piano-Forte Strings and we do hereby declare that the following is a full, clear, and exact description of the construct-ion and operation of the same, reference being had to the annexed drawings, making a partof this specification, and to the letters and figures of reference marked thereon.

Figures 11., 2, am 3 are transverse sectional views of our pianot'orte string.

()ur invention relates to piano-forte strings which are covered or wound with wire; and it consists in making the steel wire or core for said strings oval, triangular, quadrangular, or polygonal (except round and round and fiattened) in cross-section, for the purpose of holdin g the covering-wire iirm and compact at every turn around said steel wire, as will be hereinafter more fully set forth.

The annexeddrawings, to which reference is made, 'l'ully illustrate our invention.

A represents the steel wire or core of the string, and B is the covering-wire wound or wrapped around the same.

Ordinarily the practice has been to hammer a small space tlat on the steel wire to be covered at each end where the covering was to be attached, thus leaving nearly the whole of the covering dependent on the ends for support, and causin a recoil and loosening of the covering after it is wound, and making in many cases the strings entirely useless on account of their making a false jarring tone.

To obviate this difliculty we make the steel wire or core A oval, triangular, quadrangular, or polygonal (exeeptin g round and round and flattened) in cross-section for its entire length. This may be done by flattening one or more sides, as shown in Figs. 1 and 2, or by giving it an oval shape on one or more sides, as shown in Fig. 3, or in any other way making it of other form than round and round and fiattened in cross-section, so that the coveringwire B will be set and fastened at each and every turn upon the steel. core.

The covering-wire B is wound around the steel string or core A in a uniform and close manner, and by the novel shape of said core the covering-wire becomes securely fastened at every turn, thereby preventing any recoil from taking place in said covering while being wound, or when finished, or when in use.

\Ve are aware that a suggestion has been made of a .iiat string which may be wound. \Ve therefore disclaim the invention thereof. It is obvious, however, that a string perfectly fiat on both sides, unless it be provided with an unusual amount of metal to serve as body, is poorly adapted for windin hat we claim as new, and desire to secure by Letters Patent, is

As a new article of manufacture, a pianostring composed of a core oval, triangular, quadrilateral, or polygonal (except round and round and flattened) in cross-section througlr out its entire length, and a wrapping of coiled wire, substantially as and for the purpose set forth.

In testimony that we claim the above we have hereunto subscribed our names in the presence of two witnesses.

EDWIN JUDSON \VATSON. PAUL BAUER, Witnesses:

A. S. WArsoN, F. H. ALLEN. 

